\chapter{Acronym}

  \begin{acronym}[YTM]
    \acro{OS}{Operating System}
    \acro{DoS}{Denial of Service}
    \acro{TCP}{Transmission Control Protocol}
    \acro{IP}{Internet Protocol}
    \acro{NT}{New Technology}
    \acro{PGP}{Pretty Good Privacy}
    \acro{GPG}{GNU Privacy Guard}
    \acro{LAN}{Local Area Network}
    \acro{WAN}{Wide Area Network}
    \acro{WAF}{Web Application Firewall}
    \acro{DNS}{Domain Name System}
    \acro{HTTP}{Hypertext Transfer Protocol}
    \acro{XAMPP}{X Apache MySQL Perl PHP}
    \acro{OWASP}{Open Web Application Security Project}
  \end{acronym}
 